<template>
  <div class="my-tab-bar">
    <div class="tab-item" v-for="(obj,index) in list" :key="index" :class="{current:isShow===index}"
    @click="btn(index,obj.componentName)">
      <!-- 图标 -->
      <span class="iconfont" :class="obj.iconText"></span>
      <!-- 文字 -->
      <span>{{obj.text}}</span>
    </div>
  </div>
</template>

<script>
export default {
  data(){
     return {
      //用一变量实现高亮效果
      isShow:0
     }
  },
  props: {
    //主页面tabList父传子并校验，渲染
    list: {
      type: Array,
      required: true,
      validators(val) {
        if (val.length < 2 || val.length > 5) return false
        return true
      }
    }
  },
  methods: {
    //设置点击事件传递componentName
    btn(index,val){
     this.isShow=index
     this.$emit('comchange',val)
    }
  }
}
</script>

<style lang="less" scoped>
.my-tab-bar {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 50px;
  border-top: 1px solid #ccc;
  display: flex;
  justify-content: space-around;
  align-items: center;
  background-color: white;

  .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}

.current {
  color: #1d7bff;
}
</style>